python_学生信息管理实例

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"""提示：代码中的内容均被注释，请参考，切勿照搬"""

"""注意:代码切勿照搬，错误请留言指出"""

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  1 class student:
  2     def __init__(self,no,name,sex,age):
  3         self.no = no
  4         self.name = name
  5         self.sex = sex
  6         self.age = age
  7 
  8     def show(self):
  9         print("%s %s %s %d"%(self.no,self.name,self.sex,self.age))
 10 
 11 class studentlist:
 12     def __init__(self):
 13         self.students=[]   #存信息的空list
 14 
 15     def show(self):
 16         print("%s %s %s %d" % (no,name,sex,age))
 17         for s in self.students:
 18             s.show()
 19 
 20     def __insert(self,s):
 21         i = 0
 22         while (i<len(self.students) and s.no> self.students[i].no):  ##!!
 23             i=i+1
 24         if (i<len(self.students) and s.no== self.students[i].no):  ##!!
 25             print(s.no+"已经存在")
 26             return false
 27         self.students.insert(i,s)
 28         print("添加成功")
 29         return true
 30 
 31     def __update(self,s):
 32         flag = false
 33         for i in range(len(self.studenlist)):
 34             if(s.no == self.students[i].no):
 35                 self.students[i].name = s.name
 36                 self.students[i].sex = s.sex
 37                 self.students[i].age = s.age
 38                 print("修改成功")
 39                 flag = true
 40                 break
 41         if (not flag):
 42             print("没有这个学生")
 43         return flag
 44 
 45     def __delete(self,no):
 46         flag = false
 47         for i in range(len(self.students)):
 48             if (self.students[i].no == no):
 49                 del self.students[i]
 50                 print("删除成功")
 51                 flag = true
 52                 break
 53         if(not flag):
 54             print("没有这个学生")
 55         return flag
 56 
 57     #用户预输入数据
 58     def insert(self):
 59         no = input("no:")
 60         name = input("name:")
 61         while true:
 62             sex = input("sex:")
 63             if(sex=='男' or sex=='女'):
 64                 break
 65             else:
 66                 print("----sex数据有误----")
 67         age = int(input("age:"))
 68         if(no!='' or name!=''):
 69             self.__insert(student(no,name,sex,age))
 70         else:
 71             print("----学号or性别不能为空----")
 72 
 73     def update(self):
 74         no = input("no:")
 75         name = input("name:")
 76         while true:
 77             sex = input("sex:")
 78             if (sex == '男' or sex == '女'):
 79                 break
 80             else:
 81                 print("----sex数据有误----")
 82         age = int(input("age:"))
 83         if (no != '' or name != ''):
 84             self.__update(student(no, name, sex, age))
 85         else:
 86             print("----学号or性别不能为空 ----")
 87 
 88     def delete(self):
 89         no = input("no:")
 90         if(no != ''):
 91             self.__delete(no)
 92     #用户输入
 93     def scanf(self):
 94         while true:
 95             s=input(">>>")
 96             if (s =='insert'):
 97                 self.insert()
 98             elif (s =='update'):
 99                 self.update()
100             elif (s =='delete'):
101                 self.delete()
102             elif (s =='show'):
103                 self.show()
104             elif (s =='exit'):
105                 break
106             else:
107                 print("----指令输入错误----")
108 
109 s=studentlist()
110 s.scanf()

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